# num = 3
# def fun():
#     num = 5
#     print('函数内局部变量num的值：',num)
# fun()
# print('函数外全局变量num的值：',num)
#
# num = 5
# def fun():
#     global num
#     num += 1
#     print('函数内num的值：',num)
# fun()
# print('函数外num的值',num)
#
#
# def outer():
#     num = 1
#     def inner():
#         nonlocal num
#         num = 2
#         print('inner函数中num的值：',num)
#     inner()
#     print('outer函数中num的值：',num)
# outer()
#
#
#
# stu = [{'num':'201801','name':'王五','score':89},
#        {'num':'201802','name':'刘军','score':95},
#        {'num':'201803','李梦':'score':85}]
# stu.sort(key=lambda x:x['score'])
# for s in stu:
#     print('学号：',s['num'],'姓名:',s['name'],'成绩:',s['score'])